[Tom]

Hi
I am preparing to rust blue a set of barrels and there are areas that I really can't get with the sand paper. I an effort to strip them clean I have read to use vinegar or navel jelly to get out the blueing I can't reach.

My question is if I use navel jelly can it attack the solder under the rib ?

That crevice is where most of the blue is that I can't get out, and I am paranoid of ruining the solder joint and by extension the barrels.
Just looking for some reassurance before I go ahead and pour it on.

Thank you, Tom